This cache will lead you to an interesting geological phenomenon at the mouth of theRibeira do Faial. Part of this phenomenon is inserted in the new recreation area built here.The leisure area of the Complexo Balnear do Faial, near the mouth of the river, has a park for recreational activities.

With a vast green area, this space has a bike path, a mini bike path (for children), a radical park and specific areas to Madeira's traditional games, among others.

This park is framed between the steep banks of the mouth of the Ribeira do Faial,including most importantly, to the north, the impressive basalt rock formations that hold the Morro do Cabrestante South and the start of the mountain ridge which skirts the right edge of the riverside.

Thanks to the dimensions of the ground, high enough, this area has the effect of a viewpoint over the valley, especially a very good view to the sea.In this area you can observe an interesting geological structure called Columnar Jointing.

The formation of prismatic columns occurs during cooling of the lava from a volcano. When the lava cools the tension caused by thermal contraction exceeds the tensile strength of the rock, leading to fracturing. The formation of pentagonal or hexagonal prisms is motivated by the stability of these geometries in terms of a rupture surface. The development of the columns is generally perpendicular to the surface cooling. This usually coincides with the top or bottom of the draining area, and for that reason the observation of vertical structures is quite common.